Authorities in Washington state have launched a manhunt for a fish artist.

An unknown artist “art bombed” the Issaquah Salmon Hatchery east of Seattle by leaving a brand new, six-foot sculpture of a salmon on the grounds in the middle of the night. The cedar sculpture, which appears to have been made using a chainsaw, says “Issaquah” in large letters at its base.

The hatchery’s managers have asked the public for help in finding the artist – because they think the sculpture is beautiful and they want to say thanks, local media and Field & Stream magazine report.

Jane Kuechle, the executive director of The Friends of the Issaquah Salmon Hatchery, told KOMO-TV that the sculpture will be displayed along with a pair of steel salmon and an eagle statue already on hand. The fact that the art didn’t cost the hatchery a dime is a big deal, she said.

"I suppose they want to remain anonymous but it would be nice to thank them," Kuechle said.